package com.wyp168.leetcode;

import java.util.HashMap;
import java.util.Map;

public class ThreadTest extends Thread{
    public static void main(String[] args) {
        //获取cpu的核数
        //CPU 密集型，IO密集型
        Map<Object,Object> map = new HashMap<>();
        map.put(new String("123"),"123");
        System.out.println(map.get(123));
    }
}
